Removal of pre-cuticle using continuous biological aeration process and taking into account hydraulic retention time and organic charge concentration

Introduction: Lack of water resources and environmental problems due to the discharge of wastewater and effluents into the receiving waters, has forced humans to use various solutions to treat wastewater and reuse it. Among the various contaminants, phenol compounds and their derivatives (cuticles) are of particular importance. The aim of this study was to investigate the removal of pre-cuticle using continuous biological aeration process and to consider hydraulic retention time and organic charge concentration. Methods: The present study is an experimental-laboratory study in which the effect of variables of initial concentration of pericticol (5,10,25) mg / l), hydraulic retention time (2,5,8,24 h) and inlet load concentration ( 100,150,200 mg / L was investigated for precuticle removal in a continuous aeration biological reactor. Results: The results showed that the removal efficiency of pericticle at an input concentration of 25 mg / l, hydraulic retention time 8 hours and at BOD5 input at 150 mg / l in the aeration reactor the highest percentage of results indicate that with increasing BOD input percentage Deletion increases and the percentage of deletion decreases with increasing concentration of the input cuticle. Discussion and Conclusion: The results of this study indicate that the process of biodegradation of continuous aeration can have a good efficiency in removing the pericarp and the results showed that the removal efficiency can be 99%.